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Open AccessArticle

Automatic Single Droplet Generator with Control over Droplet Size and Detachment Frequency

Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, 00-901 Krakow, Poland
Author to whom correspondence should be addressed.
Colloids Interfaces 2019, 3(3), 57;
Received: 7 August 2019 / Revised: 19 August 2019 / Accepted: 20 August 2019 / Published: 22 August 2019
(This article belongs to the Special Issue B&D 2019)
This paper presents a quite simple, fully automatized single droplet generator, which can be an alternative for more expensive and complicated microfluidic devices. The simple generation nozzle connected to the pressure cells and cheap peristaltic pumps, synchronized via developed software with simple GUI (graphical user interface) implemented into the Raspberry Pi microcomputer allows precise control over the single droplet diameter and detachment frequency. The generator allows the formation of droplets of quite wide range of diameters without the need of orifice diameter replacements. Free control over time available for adsorption of surface active-substances over the surface of immobilized droplet, before its detachment from the orifice, is an advantage of the developed device. View Full-Text
Keywords: dispersion; droplet; velocity; generator dispersion; droplet; velocity; generator
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Gawel, D.; Zawala, J. Automatic Single Droplet Generator with Control over Droplet Size and Detachment Frequency. Colloids Interfaces 2019, 3, 57.

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